Check the label on the bottom of the laptop
Check the label under the battery if removable
Open Lenovo Vantage and view the device information
Press Windows + R, type msinfo32, and check System Model
Open Command Prompt and run wmic csproduct get name
Check the BIOS/UEFI setup for the model name
Look at the original box or purchase receipt
Check the sticker near the keyboard or palm rest
Find the model in Device Manager under System devices
Use Lenovo support website with the serial number or machine type